Looking for the best rainwater harvesting systems? We’ve tested and reviewed the top 10 options to help you find the perfect one for your needs.
Rainwater harvesting is a smart way to save water and cut bills. With the right system, you can collect rainwater easily and use it for gardening, washing, or irrigation.
Many rain barrels and diverters are easy to install and built to last. They come with filters to keep debris out and spigots for easy access.
We’ve tested and reviewed the best rainwater harvesting systems to help you choose the perfect one. Whether you need a collapsible barrel or a self-flushing diverter, we’ve got you covered.
List of Top 10 Rainwater Harvesting Systems
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Collapsible Rain Barrel Water Storage Containers-53 Gallon Portable Rainwater Collect System Water Tank to Collect Rainwater from Gutter Downspout Water Catcher with Spigots,Filter＆Overflow Kits |
This collapsible rain barrel is perfect for eco-conscious individuals who want to save water and reduce waste. It’s easy to use, store, and transport, making it ideal for gardening, farm irrigation, or car washing. |
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FCMP Outdoor Raincatcher 4000, Flat-Back Rain Water Barrel, 50-Gallon, Gray – Rainwater Collection Storage Container w/Side Spigots, Mesh Screen, Garden and Overflow Hose & Linking Kit |
This 50-gallon flat-back rain catcher is perfect for home gardeners. It helps them lower their water bills and use collected rainwater for their plants. |
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Anivia Rain Barrel Diverter Kit, Fits 2×3 or 3×4 in, Valve & Filter, White |
This Anivia Rain Barrel Diverter Kit is perfect for homeowners who want to save water and reduce their bills. It’s easy to use and fits most downspouts, making it ideal for anyone looking to collect rainwater for gardening, car washing, or outdoor tasks. |
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Step2 Lakewood Rain Barrel with Stand, Outdoor Water Conservation Container, Holds 60 Gallons, Brown |
This rain barrel is perfect for anyone who wants to save water and help the planet. It’s easy to use and built to last, making it great for gardens or outdoor spaces. |
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Leaf Eater Advanced Rain Harvesting RHAD100 Both 3″ and 4″ Compatible |
The Leaf Eater Advanced Rain Harvesting RHAD100 is perfect for anyone who wants to collect rainwater with ease. It’s great for homes with gutters and works with both 3″ and 4″ setups. |
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Prestantious Downspout Rainwater Diverter Fit for 3″x4″ and 2″x3″ Downspout |
This rainwater diverter is perfect for gardeners who want to save water and help the environment. It’s easy to install and works with both large and small downspouts, making it a great choice for anyone looking to collect rainwater for their garden. |
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Prestantious Gutter Downspout Diverter with Built-in Filter Screen,White |
This Prestantious Gutter Downspout Diverter is perfect for anyone who wants to save water and keep their garden healthy. It’s easy to install and works great for collecting rainwater for your plants, lawn, or even washing your car. |
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Best Downspout Diverter Rainwater Harvesting & Collection, Self-Flushing, Prevents Clogs, Fits 2-5/8 x 2-5/8, 2×3, 3×3, 3×4, up to 5×5 & Round Downspouts. |
This diverter is perfect for homeowners who want to collect rainwater for gardens and lawns. It fits any downspout and is easy to install. |
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Rainwater Collection System with Hose, Portable Outdoor Rainwater Harvesting Funnel, Water Storage Bag, Reusable Rain Catcher, Water Diverter for Lawn Outdoor Backyard Garden Balcony Camping |
This rainwater collection system is perfect for gardeners who want to save water and money. It’s also great for outdoor lovers who need a portable, eco-friendly way to water plants while camping or on the go. |
Detailed Reviews
We’ve ranked the best rainwater harvesting systems for 2024. Each pick is backed by expert reviews and real user feedback. You’ll learn which model fits your budget, space, and water needs. Read on to discover the perfect system that saves water and money.
1. Collapsible Rain Barrel Water Storage Containers-53 Gallon Portable Rainwater Collect System Water Tank to Collect Rainwater from Gutter Downspout Water Catcher with Spigots,Filter＆Overflow Kits
Our collapsible rain barrel is a 53-gallon water storage solution. It’s easy to use and saves space. Perfect for collecting rainwater from your gutter.
Made from durable PVC material, it’s strong and stable. The leak-proof design ensures no water waste. Foldable for simple storage and transport.
The built-in filter keeps debris out of your water. Use it for gardening, washing, or irrigation. Eco-friendly and convenient for daily use.
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Perfect For:
This collapsible rain barrel is perfect for eco-conscious individuals who want to save water and reduce waste. It’s easy to use, store, and transport, making it ideal for gardening, farm irrigation, or car washing.
Ready to Purchase?
2. FCMP Outdoor Raincatcher 4000, Flat-Back Rain Water Barrel, 50-Gallon, Gray – Rainwater Collection Storage Container w/Side Spigots, Mesh Screen, Garden and Overflow Hose & Linking Kit
The FCMP Outdoor Raincatcher 4000 is a 50-gallon rainwater barrel that helps you save water and cut bills. Its flat-back design fits neatly against your home, making setup quick and easy. The wide opening connects smoothly with your downspout for hassle-free installation.
Made from durable, UV-resistant material, this barrel is built to last outdoors. It includes side spigots to link multiple barrels, expanding your storage effortlessly. FCMP Outdoor, a trusted Canadian brand, ensures reliable and practical solutions for your home.
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Perfect For:
This 50-gallon flat-back rain catcher is perfect for home gardeners. It helps them lower their water bills and use collected rainwater for their plants.
Ready to Purchase?
3. Anivia Rain Barrel Diverter Kit, Fits 2×3 or 3×4 in, Valve & Filter, White
The Anivia Rain Barrel Diverter Kit helps you collect rainwater from your roof. It fits common downspouts and connects easily to your rainwater system.
It has a removable filter to catch leaves and debris. You can adjust the water flow to Off, Medium, or High.
The kit includes everything you need: diverter, hose, and screws. Made of paintable PVC, it’s built for year-round outdoor use.
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Perfect For:
This Anivia Rain Barrel Diverter Kit is perfect for homeowners who want to save water and reduce their bills. It’s easy to use and fits most downspouts, making it ideal for anyone looking to collect rainwater for gardening, car washing, or outdoor tasks.
Ready to Purchase?
4. Step2 Lakewood Rain Barrel with Stand, Outdoor Water Conservation Container, Holds 60 Gallons, Brown
The Step2 Lakewood Rain Barrel is a 60-gallon water saver. It collects rainwater to help you conserve resources. Its elevated design makes watering easier.
It has a stainless steel mesh filter for clean water flow. The brass spigot is durable and stylish. You can link multiple barrels for more storage.
The double-walled plastic is built to last. Colors won’t fade or crack. It’s easy to clean and quick to assemble.
| Pros | Cons |
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Perfect For:
This rain barrel is perfect for anyone who wants to save water and help the planet. It’s easy to use and built to last, making it great for gardens or outdoor spaces.
Ready to Purchase?
5. Leaf Eater Advanced Rain Harvesting RHAD100 Both 3″ and 4″ Compatible
The Leaf Eater Advanced Rain Harvesting RHAD100 works with both 3″ and 4″ systems. It helps you collect rainwater easily.
It has a 95%+ capture efficiency, so it catches almost all leaves. The self-cleaning feature keeps it working smoothly. You won’t need to clean it often.
The 1000 micron screen stops small debris from passing through. It’s built to last and works reliably. This tool makes rain harvesting simple.
| Pros | Cons |
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Perfect For:
The Leaf Eater Advanced Rain Harvesting RHAD100 is perfect for anyone who wants to collect rainwater with ease. It’s great for homes with gutters and works with both 3″ and 4″ setups.
Ready to Purchase?
6. Prestantious Downspout Rainwater Diverter Fit for 3″x4″ and 2″x3″ Downspout
The Prestantious Downspout Rainwater Diverter helps you collect and recycle rainwater easily. It fits both 3″x4″ and 2″x3″ downspouts, making it perfect for any setup.
It’s easy to install and comes with a 4ft flexible hose. You can adjust the water flow and direct the spout left or right as needed.
| Pros | Cons |
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Perfect For:
This rainwater diverter is perfect for gardeners who want to save water and help the environment. It’s easy to install and works with both large and small downspouts, making it a great choice for anyone looking to collect rainwater for their garden.
Ready to Purchase?
7. Prestantious Gutter Downspout Diverter with Built-in Filter Screen,White
The Prestantious Gutter Downspout Diverter is a smart solution for collecting rainwater. It fits both standard and oversized downspouts, making it easy to install anywhere. Its 4-foot hose ensures water reaches your rain barrel effortlessly.
It has a built-in filter screen that keeps debris out, ensuring clean water for your garden. The adjustable valve lets you control the flow, preventing overflows during heavy rain.
With a self-flushing design, it stays clog-free and low-maintenance. This diverter saves water and maximizes rainwater collection, making it a must-have for any garden.
| Pros | Cons |
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Perfect For:
This Prestantious Gutter Downspout Diverter is perfect for anyone who wants to save water and keep their garden healthy. It’s easy to install and works great for collecting rainwater for your plants, lawn, or even washing your car.
Ready to Purchase?
8. Best Downspout Diverter Rainwater Harvesting & Collection, Self-Flushing, Prevents Clogs, Fits 2-5/8 x 2-5/8, 2×3, 3×3, 3×4, up to 5×5 & Round Downspouts.
The Best Downspout Diverter is a smart solution for harvesting rainwater. It captures water from your downspout and redirects it to gardens, lawns, or rain barrels. Its self-flushing design prevents clogs, making it easy to maintain.
It fits most downspouts, from 2×3 to 5×5 inches, and includes all parts for DIY installation. The dual filter screens stop leaves and debris, keeping water clean and flowing.
Made from durable, UV-resistant plastic, it lasts year-round and works in winter too. With a one-year warranty, it’s a reliable choice for saving water and protecting your home.
| Pros | Cons |
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Perfect For:
This diverter is perfect for homeowners who want to collect rainwater for gardens and lawns. It fits any downspout and is easy to install.
Ready to Purchase?
9. Rainwater Collection System with Hose, Portable Outdoor Rainwater Harvesting Funnel, Water Storage Bag, Reusable Rain Catcher, Water Diverter for Lawn Outdoor Backyard Garden Balcony Camping
Harvest rainwater with ease using this portable collection system. It’s perfect for gardens, lawns, or balconies.
Durable Oxford fabric resists wear and weather. Wide opening captures more rain. Easy setup on any surface.
Save money on water bills. Support green gardening. Reuse rainwater for plants.
| Pros | Cons |
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Perfect For:
This rainwater collection system is perfect for gardeners who want to save water and money. It’s also great for outdoor lovers who need a portable, eco-friendly way to water plants while camping or on the go.
Ready to Purchase?
Buying Guide
Rainwater harvesting is a smart way to save water and cut bills. With the right system, you can collect rainwater easily and use it for gardening, washing, or irrigation.
Choosing the best rainwater harvesting system can be fun and rewarding. You’ll save money and help the planet. Here’s what to look for:
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Capacity:
Pick a size that fits your needs. Smaller barrels work for light use, while larger ones are great for big gardens or frequent watering. -
Material:
Look for durable materials like PVC, UV-resistant plastic, or fabric. They last longer and handle weather better. -
Ease of Installation:
Choose a system that’s easy to set up. Many come with clear instructions and all the parts you need. -
Filters and Screens:
Built-in filters keep debris out, so your water stays clean. Self-cleaning features save you time and effort. -
Portability:
If you need to move your system, go for a collapsible or lightweight option. It makes storage and transport simple. -
Spigots and Hoses:
Spigots let you access water easily. Some systems have hoses or linking kits to connect multiple barrels. -
Design:
Consider the shape and color. Flat-back designs fit neatly against walls, while elevated barrels make watering easier. -
Maintenance:
Look for low-maintenance options. Self-flushing diverters and easy-to-clean barrels save you time. -
Eco-Friendliness:
Choose a system that’s eco-friendly. Reusing rainwater helps the environment and reduces waste.
With these tips, you’ll find the perfect rainwater harvesting system for your home. Start saving water and money today!